Spraying machine



June 24 L. BISHOP SPRAYING MACHINE Filed Jan. 5. 1924 Patented June 24,1924.

LEWIS BISHOP, OF ARCADIA, IELOIEtIDA.

SPRAYING- MACHINE.

Application filed January3, 1924. Serial No. 684,219.

To all whom it may concern:

Be it known that I, Lnwrs Brsnor, a. citizen of the United States,residing at Arcadia, in the county of De Soto and State of Florida, haveinvented a new and useful Spraying Machine, of which the following is aspecification. v

This invention relates to a machine for spraying vegetation and forsimilar pur poses, one of the objects of the invention being to providea wheel'supported structure which, when moved from place to place, willset up a pressure upon the liquid contents of the structure so that thesame will be expelled forcibly from hose connected thereto.

A further object isto provide a device of this character utilizing atank in which liquid is placed under pressure by a. plunger, means beingemployed for automatically returning the plunger to initial position.

Another object is to provide means operat ed by the movement of thestructure from place to place for agitating the contents of thecontainer.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed may be made within thescope of what is claimed without departing from the spirit oftheinvention. In the accompanying drawings the preferred form of theinvention has been'shown.

In said drawings Figure 1 is a vertical longitudinal section through theapparatus.

Fig. 2 is an end elevation thereof.

Fig. 3 is a side elevation of the clutch.

of the threaded stem.

Fig. 4 is a plan view'thereof.

Fig. 5 is a detail view. of the keeper of the controllingl'ever, thelever being shown in section. I

Referring to the figures by characters of reference 1 designates a tank,preferably cylindrical, having supporting wheels 2 carrying axles '3 and1 011 which the tank is mounted. The axle 3 is adapted to rotate and hasa gear 5 thereon rotatable'with a sprocket 6.. A longitudinal shaft 7vis supported under the tank. and has a gear 8 meshing with the gear 5,there being a sprocket 9 at the forward end of the shaft. This sprockettransmits motion through a chain 10 to a sprocket 11 secured to a shaft12 journaled within one end of thetank 1. This shaft has an agitator 13'connected thereto and within the tank so that when it is rotated theliquidcontentsof the tank will be kept thoroughly mixed. I

Mounted to slide within the tank 1 is a follower or piston 14: theactive face of which is preferably concaved as shown at 15. Extendingfrom the center of this concaved face is a rod 16 projecting through onehead of the tank 1 and into an elongated housing 17. A spring '18 islocated within this housing and bears against a head or enlargement 19on one endof the rod 16. Thus when the piston or follower is moved inone direction spring 18 will'be placed under compression and when thesaid piston is released the springwfll return it to normal, position. Aport 2Ois provide'd in the piston and is normally closed by a springcontrolled release valve 21. This valve is adapted to open when thepiston is moved back to normal position but will remain closed while thepiston is. being used to compress the liquid in the path: thereof.

Secured to the piston and extending loosely through that head thereofremote from the housing 17 is a threaded stem 22.

A worm gear 23 extends loosely around and out of engagement with thisstem and is journaled on the rear head of the tank, this gear beingconstantly in mesh with the'worm 24 carried bya shaft 25. 'A gear 26 issecured to this shaft and receives motion through a gear 27 from a shaft28. A sprocket 29 is nounted'on this shaft and is driven by a chain 30engaging the sprocket 6. A sleeve 31 is loosely mounted on the threadedstem 22 and pivotally connected to one end portion of this sleeve areopposed members of a sectional nut '32 normally spaced apart bysprings'33. The free ends of the sections of the nut are tapered asshown at 34 andare adapted to be directed into the flared end .35 of thehubof gear'23. A lever 36 is pivotally connected to a bracket 37 on onehead of the tank and is movable against one end of thesleeve 31 to shiftit longitudinally and force the sections of the nut, 32 into theflaredend 35 of gear 23. Vhen the nut sections arethus positioned the lever 36is in engagement with a spring 7 is then closed. Piston 14: is normallyposithe parts.

tioned close to that head of the tank 1 remote from the agitator 13.While lever 36 is disengaged from keeper 38 the sections of the nut 32are spaced apart so as to be disengaged from the threaded stem 22.Consequently as the machine moves forwardly the gear 23 will rotatewithout actuating the piston. By swinging lever 36 into engagement withthe keeper 38, however, the sections of the nut 32 will be wedged intothe flared portion 35 of gear 23 and thus be contracted onto thethreaded stem and bind upon the hub portion of the gear 23. Thus as themachine moves forward the rotating gear 23 will set up a correspondingrotation of the nut 32 and sleeve 31 with the result that the stem 23and the piston 14 will be fed forwardly, thereby placing undercompression the liquid located in the path of the piston. As the liquidis withdrawn from the tank through the pipe 39 and the hose 40 theagitator 13 is operated as will be obvious, keeping the ingredientsthoroughly mixed. When the piston reaches the limit of'its forwardmovement lever 36 can be released, thereby allowing the spring 18, whichhas been placed under compression, to return the piston to its normalposition, it being understood that during this movement the members ofthe nut 32 will move apart out of engagement with the threaded stem.During this return movement of the piston 14 any air contained in thepath thereof will be free to escape past the valve 21 which will open torelease the same.

It is to be understood of course that various means other than thosedisclosed may be employed for feeding the piston within the tank.

It is also to be understood that if desired the inter-engaging faces ofthe nut sections 32 and the flared portion 35 can be toothed to insuretransmission of motion between This has been indicated clearly at 34:.

It is to be understood that this apparatus need not be of portableconstruction but can be used for any suitable stationary work and can bedriven by any desired power.

What is claimed is 1. The combination with a wheel supported tank, of apiston mounted for sliding movement therein, means for automaticallyreturning the piston to its initial position when released from itspropelling means, a threaded stem slidable with the piston, a drivingmechanism operated by the supporting wheels, and means for coupling thedriving mechanism to and uncoupling it from the threaded stem.

2. The combination with a tank having an outlet and supporting wheelstherefor, of a piston within the tank, a threaded stem pro- 7 jectingtherefrom, mechanism actuated by the supporting wheels, means forcoupling said mechanism to and uncoupling it from the stem, andresilient means for returning the piston to normal position whenuncoupled from the driving mechanism.

3. The combination with a tank and supporting wheels therefor, of apiston mounted for movement within the tank, a threaded stem projectingtherefrom, a gear loosely mounted on the stem, means for driving thegear from the supporting wheels, a split nut normally disengaged fromthe stem, means for shifting the nut into engagement with the gear andstem for rotation by the gears to shift the stem and piston, andyielding means for returning the piston to its normal position when thenut is disengaged from the stem.

4. The combination with a tank and sup porting wheels therefor, saidtank having an outlet, of a piston mounted for movement within the tank,a gear actuated by the supporting wheels, a threaded stem movable withthe piston and out of engagement with the gear, a split nut normallydisengaged from the stem, means for shifting the nut relative to thestem, cooperating means upon the gear and nut for placing said nut in engagement'with the stem and for coupling the nut to the gear.

5. The combination with a tank and sup porting wheels therefor, saidtank having an outlet, of a piston'mounted for movement within the tank,a gear actuated by the supporting Wheels, a threaded stem movable withthe piston and out of engagement with the gear, a split nut normallydisengaged from the stem, means for shifting the nut relative to thestem, cooperating means upon the gear and nut for placing said nut inengagement with the stem and for cou pling the nut to the gear, a rodextending from and movable with the piston, and a spring engaging therod for returning the piston to normal position when the nut isdisengaged from the stem.

6. The combination with a'wheel supported tank, a piston thereon, and athreaded stem projecting through the piston, of an agitator within thetank, means operated by the movement of the supporting wheels foractuating the agitator, a gear mounted for rotation by the movement ofthe tank, a split nut normally disengaged from the gear and stem, meansfor shifting said nut into engagement with the gear and stem, forrotation with the gear to actuate the stem.

7. The combination with a Wheel supported tank, a piston thereon, and athreaded stem projecting through the piston, of an agitator within thetank, means operated by the movement of the supporting wheels foractuating the agitator, a gear mounted for rotation by the movement ofthe tank, a split nut normally disengaged from the gear and stem, meansfor shifting said nut into engagement With the gear and stem forrotation With the gear to actuate the stem, a

relief valve Within the piston, and means 15 as my own, I have heretoaffixed my signa- 20 ture in the presence of two Witnesses.

LEWIS BISHOP.

Witnesses:

HENRY W. RICE, LEON RICE.

